Arachnoid cyst presenting as subdural hygroma.
D000328:Adult; D016080:Arachnoid Cysts / Q000150:complications* / Q000175:diagnosis / Q000000981:diagnostic imaging; D001265:Athletic Injuries / Q000150:complications; D006259:Craniocerebral Trauma / Q000150:complications; D004322:Drainage; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013353:Subdural Effusion / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D014057:Tomography, X-Ray Computed